﻿(function($) {
    $.fn.tweet = function(o) {
        var s = {
            username: [""],              // [string]   required, unless you want to display our tweets. :) it can be an array, just do ["username1","username2","etc"]
            list: null,                              //[string]   optional name of list belonging to username
            avatar_size: null,                      // [integer]  height and width of avatar if displayed (48px max)
            count: 3,                               // [integer]  how many tweets to display?
            intro_text: null,                       // [string]   do you want text BEFORE your your tweets?
            outro_text: null,                       // [string]   do you want text AFTER your tweets?
            join_text: null,                       // [string]   optional text in between date and tweet, try setting to "auto"
            auto_join_text_default: "eu disse,",      // [string]   auto text for non verb: "i said" bullocks
            auto_join_text_ed: "eu",                 // [string]   auto text for past tense: "i" surfed
            auto_join_text_ing: "eu sou",             // [string]   auto tense for present tense: "i was" surfing
            auto_join_text_reply: "eu respondi que",   // [string]   auto tense for replies: "i replied to" @someone "with"
            auto_join_text_url: "eu buscava por", // [string]   auto tense for urls: "i was looking at" http:...
            loading_text: null,                     // [string]   optional loading text, displayed while tweets load
            query: null                             // [string]   optional search query
        };

        if (o) $.extend(s, o);

        $.fn.extend({
            linkUrl: function() {
                var returning = [];
                var regexp = /((ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?)/gi;
                this.each(function() {
                    returning.push(this.replace(regexp, "<a href=\"$1\">$1</a>"));
                });
                return $(returning);
            },
            linkUser: function() {
                var returning = [];
                var regexp = /[\@]+([A-Za-z0-9-_]+)/gi;
                this.each(function() {
                    returning.push(this.replace(regexp, "<a href=\"http://twitter.com/$1\">@$1</a>"));
                });
                return $(returning);
            },
            linkHash: function() {
                var returning = [];
                var regexp = /(?:^| )[\#]+([A-Za-z0-9-_]+)/gi;
                this.each(function() {
                    returning.push(this.replace(regexp, ' <a target="_blank" href="http://search.twitter.com/search?q=&tag=$1&lang=all&from=' + s.username.join("%2BOR%2B") + '">#$1</a>'));
                });
                return $(returning);
            },
            capAwesome: function() {
                var returning = [];
                this.each(function() {
                    returning.push(this.replace(/\b(awesome)\b/gi, '<span class="awesome">$1</span>'));
                });
                return $(returning);
            },
            capEpic: function() {
                var returning = [];
                this.each(function() {
                    returning.push(this.replace(/\b(epic)\b/gi, '<span class="epic">$1</span>'));
                });
                return $(returning);
            },
            makeHeart: function() {
                var returning = [];
                this.each(function() {
                    returning.push(this.replace(/(&lt;)+[3]/gi, "<tt class='heart'>&#x2665;</tt>"));
                });
                return $(returning);
            }
        });

        function parse_date(date_str) {
            // The non-search twitter APIs return inconsistently-formatted dates, which Date.parse
            // cannot handle in IE. We therefore perform the following transformation:
            // "Wed Apr 29 08:53:31 +0000 2009" => "Wed, Apr 29 2009 08:53:31 +0000"
            return Date.parse(date_str.replace(/^([a-z]{3})( [a-z]{3} \d\d?)(.*)( \d{4})$/i, '$1,$2$4$3'));
        }

        function relative_time(time_value) {
            var parsed_date = parse_date(time_value);
            var relative_to = (arguments.length > 1) ? arguments[1] : new Date();
            var delta = parseInt((relative_to.getTime() - parsed_date) / 1000);
            var pluralize = function(singular, n) {
                return '' + n + ' ' + singular + (n == 1 ? '' : 's');
            };
            if (delta < 60) {
                return 'menos de um minuto atrás';
            } else if (delta < (60 * 60)) {
                return 'cerca de ' + pluralize("minuto", parseInt(delta / 60)) + ' atrás';
            } else if (delta < (24 * 60 * 60)) {
                return 'cerca de ' + pluralize("hora", parseInt(delta / 3600)) + ' atrás';

                return 'cerca de ' + pluralize("hora", parseInt(delta / 3600)) + ' atrás';
            } else {
                return 'cerca de ' + pluralize("dia", parseInt(delta / 86400)) + ' atrás';
                return 'cerca de ' + pluralize("dia", parseInt(delta / 86400)) + ' atrás';
            }
        }

        function build_url() {
            var proto = ('https:' == document.location.protocol ? 'https:' : 'http:');
            if (s.list) {
                return proto + "//api.twitter.com/1/" + s.username[0] + "/lists/" + s.list + "/statuses.json?per_page=" + s.count + "&callback=?";
            } else if (s.query == null && s.username.length == 1) {
                return proto + '//api.twitter.com/1/statuses/user_timeline.json?screen_name=' + s.username[0] + '&count=' + s.count + '&callback=?';
            } else {
                var query = (s.query || 'from:' + s.username.join(' OR from:'));
                return proto + '//search.twitter.com/search.json?q=&ands=&phrase=&ors=' + escape(query) + '&rpp=' + s.count + '&callback=?';
            }
        }

        return this.each(function(i, widget) {
            var list = $('<ul class="tweet_list">').appendTo(widget);
            var intro = '<p class="tweet_intro">' + s.intro_text + '</p>';
            var outro = '<p class="tweet_outro">' + s.outro_text + '</p>';
            var loading = $('<p class="loading">' + s.loading_text + '</p>');

            if (typeof (s.username) == "string") {
                s.username = [s.username];
            }

            if (s.loading_text) $(widget).append(loading);
            $.getJSON(build_url(), function(data) {
                if (s.loading_text) loading.remove();
                if (s.intro_text) list.before(intro);
                var tweets = (data.results || data);
                $.each(tweets, function(i, item) {
                    // auto join text based on verb tense and content
                    if (s.join_text == "auto") {
                        if (item.text.match(/^(@([A-Za-z0-9-_]+)) .*/i)) {
                            var join_text = s.auto_join_text_reply;
                        } else if (item.text.match(/(^\w+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+) .*/i)) {
                            var join_text = s.auto_join_text_url;
                        } else if (item.text.match(/^((\w+ed)|just) .*/im)) {
                            var join_text = s.auto_join_text_ed;
                        } else if (item.text.match(/^(\w*ing) .*/i)) {
                            var join_text = s.auto_join_text_ing;
                        } else {
                            var join_text = s.auto_join_text_default;
                        }
                    } else {
                        var join_text = s.join_text;
                    };

                    var from_user = item.from_user || item.user.screen_name;
                    var profile_image_url = item.profile_image_url || item.user.profile_image_url;
                    var join_template = '<span class="tweet_join"> ' + join_text + ' </span>';
                    var join = ((s.join_text) ? join_template : ' ');
                    var avatar_template = '<a class="tweet_avatar" href="http://twitter.com/' + from_user + '" target="_blank"><img src="' + profile_image_url + '" height="50" width="48" alt="' + from_user + '\'s avatar" title="' + from_user + '\'s avatar" border="0"/></a> ';
                    var nome = '<span class="nome-twitter">' + from_user + '</span>';
                    var avatar = (s.avatar_size ? avatar_template : '');
                    var date = '<span class="tweet_time"><a href="http://twitter.com/' + from_user + '/statuses/' + item.id + '" title="ver tweet no twitter" target="_blank">' + relative_time(item.created_at) + '</a></span>';
                    var text = '<span class="tweet_text">' + $([item.text]).linkUrl().linkUser().linkHash().makeHeart().capAwesome().capEpic()[0].replace('<a ','<a target="_blank" ') + '</span>';

                    // until we create a template option, arrange the items below to alter a tweet's display.
                    list.append('<li>' + avatar + '<div class="li-twitter">' + nome + join + text + date + '</div></li>');

                    list.children('li:first').addClass('tweet_first');
                    list.children('li:odd').addClass('tweet_even');
                    list.children('li:even').addClass('tweet_odd');
                });
                if (s.outro_text) list.after(outro);
                $(widget).trigger("loaded").trigger((tweets.length == 0 ? "empty" : "full"));
            });

        });
    };
})(jQuery);